5lzv

Structure of the mammalian ribosomal termination complex with accommodated eRF1(AAQ) and ABCE1.

Loading... Status: waiting for Mol* initialization Structural highlights 5lzv is a 10 chain structure with sequence from Oryctolagus cuniculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.35Å Ligands: MG, SF4, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function G1TT27_RABIT Publication Abstract from PubMed In eukaryotes, accurate protein synthesis relies on a family of translational GTPases that pair with specific decoding factors to decipher the mRNA code on ribosomes. We present structures of the mammalian ribosome engaged with decoding factorGTPase complexes representing intermediates of translation elongation (aminoacyl-tRNAeEF1A), termination (eRF1eRF3), and ribosome rescue (PelotaHbs1l). Comparative analyses reveal that each decoding factor exploits the plasticity of the ribosomal decoding center to differentially remodel ribosomal proteins and rRNA. This leads to varying degrees of large-scale ribosome movements and implies distinct mechanisms for communicating information from the decoding center to each GTPase. Additional structural snapshots of the translation termination pathway reveal the conformational changes that choreograph the accommodation of decoding factors into the peptidyl transferase center. Our results provide a structural framework for how different states of the mammalian ribosome are selectively recognized by the appropriate decoding factorGTPase complex to ensure translational fidelity. Decoding Mammalian Ribosome-mRNA States by Translational GTPase Complexes.,Shao S, Murray J, Brown A, Taunton J, Ramakrishnan V, Hegde RS Cell. 2016 Nov 17;167(5):1229-1240.e15. doi: 10.1016/j.cell.2016.10.046. PMID:27863242 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also 3D sructureseceptor for activated protein kinase C 1

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